Machine for crushing or grinding.



. G. H. FRASER.

e on Gamma.

LYS. 191s.

MACHINE FOR CRUSHIN n I l VnPPL'lATmN FILED ma. 1s. 1605. nENEwEn Ju 1,222,382..

5 sains-SHEET l.

Patented Apr. 10, 1917.

jWITNEssEs;

` G. H. FRASER. MACHINE FOR CRUSHING" 0R GRINDING, APPLICATION man MAA.' ls. |905.V AENEwED :ALY 3.1916.

1,222,382. Patented Apr. 10,1917. l

5' SHEETS-SHEET 2.

G. H. FRASER.

MACHINE FOR CHUSHING 0R GRINDING. APPLICATION FILED MAR. 16, 19'05- RENEWED JULY 3,1916. 1,222,382.

Pmented Apr. .10, 1917.

. vINVENTOR.

was tfomeys,

` wNESS'ES:

G.H. FRASER. MACHAINEfOR CRUSVHINGOR GRINDING. APPLICATAION FILED HAR-15.1905. RENEWED rJUITY $1916. 1,222,382.-v

"Ptgnted Apr. 10, 1917. y V 5 SHEETS- SHEET 4.

' INVENTOR: 427g@- gy fforeys,

G. H. FRASER. MACHINE Fon cnusHmG on GRINDIN a. APPLICATION FILED MAR. 1-6, 19051y RENEWED JUL" 3. |916.

i 222,382,4 l Patented Apr. 10,1917'.

5 SHEETS-SHEET 5.

vv'lTmissEs; y

UNITED s'rA-TEs vrnzirErrr OFFICE.

GEORGE H. FRASER, OF BROUKLYN, NEU?` YORK.

MACHINE FOR CRUSHING OR GRINDING.

Application led March 16, 1905, Serial No. 250,474.

die in which the crushing is effected between theperiphery of the rolls and the inner face of the die. One example of this type of Crusher is shown in the. patent of H. L. Kent, granted May 7, 1901, No. 673,856, in which the die revolves and is held 4in position by the rolls, which latter are carried by shafts held in bearings at the outside of the casing," the bearings being carried by slide.- ways and pressed outwardly by springs, soY

that the rolls' may slidelnand out radially ofthe ring. The top roll in this patent is shown as supportingthe ring yieldingly, and the sliding frames carrying the shafts are of sectional construction, and both guide the shafts and transmit the crushing spring pressure in whole .or in part, an im sure from the springs to'tliem.

My present invention aims to provide an .improved erusher or pulvcrizer especially applicable to this general type.

Tothis end in carrying out my present invention in its preferred' forni, I provide an 'improved arrangement of'die and rolls,

' improved means for carrying the roll shafts,

improvedmeans for guidingl such shafts. means for transi'nitting all or part of: the crushing thrust from one rollto another so 'as to relieve the' bearing` pressure or the proved fred for automatically' regulating theilow to the qrusher, and various details of improv-ement in the construction and a1'- Irangement of the various parts of the Crusher. all of which will beherei'nafter more 4fully set. Jforth withl Areference to the accompanying drawings. in which,

Figure l av fragmentary side elevation of a pulverizer embodying the preferred ormof in v invention, the viewbein partly.; f

broken awayto show one of the y I es an'd the' feeder nrmld-seetion;

Specification of Letters Patent.

Patented Apr. 10, 1917.

Renewed July 3, 191B. Serial No. 107,467.

Fig. 2 is a front elevation thereof partly in vertical section;

Fig. 3 is a rear end elevation thereof partly in veltical section on the plane ot the line 3 in Fig. 1.

Fig. JC is a fragnientary vertical section cut on the planes 0i the lines L1-4`in Fig. 3 and looking,r inthe direction of the arrow, the yokes, springs and bearings being omitted for clearness;

Fig. 5 is a face View of one of the guards;

Fig. G is plates;

Fig. 7 is a fragmentary section showing the dust guard and plate in position in edge vlew;

Fig'. 8 is a fraglneitary transverse section thereof on the line 8--8 of Fig. Tand showing the dust guard in plan.;

Figs. 9, 10, 11, lf2 and 13 are diagram dust a face view of one of the, dust 'matie views illustrtting modifications of tion shown carries tle ring by acting ,against its innerfare. and the other rolls press O'u wardl)v against the mner'face to'crusl1`tlie rock between their peripheries and such iare. Their pressure may be adiusted ,by

the springs and adj I' sting seiews. 'The ring i and rolls are driven in an)7 suitable manner, as by a driving pulley Fon the shaft' D for example.

out through an opening j in the bottom of the casing. The casrngis made sectional to permit opening. as ay being constructed Vas a' base or bottom shell a and 'a cover or top she-ll i f V.

l will now describa i-n detail the preferred forni of my improvnnents asA illustrated. in the drawings.

According to one 'ieature of improvement.

The feed delivers the rock Aon to' .the inner face of thal ring. and the crushed rock Hows oli' the sides of the ring and falls` loo I guide the bearings for the several shaftsi by -aswnging guide or pivotal connection,

v are mounted shafts g g1, the shaft ."g being connected.. to the bearing E Iby links G on '0 o 'posite sides of the casing, and by links to the bearing E2, so that each of these bearings is supported `pivotally from vits center, andthe shaft D1 being connected by vv.similar links Gto the bearing El.V These 15' connections permit the bearings to rock toj Ward and from Vthe center ofthe ring, .but I f'support them against -thrusts 'in the directionof drive of the ring, as well as in case of the lower bearings carrying partof their weight. ,The linksare connected to the respective Abearings by pins e traversing the `ends 'ofthe-links and holes in projections f onf the bearings. The links may be.loosely connected 4to the shafts g g1,*but I prefer to connect only 'the links G loosely, Vso

thatY they can rock independently of each other,'a'nd to key or otherwise rigidly cony nect .the links G1 and G? to their shafts g1 and 'g res ectively, so that-these links and their sha s make- 'arigid frame extending.

around the Vcasing, and insuring parallel movement ofrkthe bearings at opposite sides o'f the latter This construction attains a more advantageous guidance of the roll shafts than heretofore, and provides a much l simpler .and more economical means for correctly guiding them.

' forml the transverse bear-ings for the guiding links with internal -chambers 7a which are filled. with ba,bbitt, for 'the' transverse A`'shafts g 91'; and I' extend these shafts beyond. their bearings. j y

According yto another feature .of improvement, IA provide a rigid bearing frame preferably consisting of a'single U-'shaped casting or yoke'z' straddling the casing and receiving the ends of the shaft at opposite v sides thereof, so that these ends are assured of parallel bearings, and Vthe number of 5o parts' necessaryis reduced 'to the minimum.

- T he bearing end 'j of each. yoke is planed and covered by a bea-ring cap lo, and the projections'f for the supporting links are prefera-bly castintegral with the end of the yoke so as to `supportthe bearing from the yoke instead of from 'the.c`ap, 'although I may .support .it from the latter, as `for example as illustrated in Figs/Hand '13. Each `yoke is a. Arelatively heavy casting in order 'to give y not only vthe strength necessary toA rigidity,

but the weight desirable tothe necessary crushing pressure or inertia. lEach yoke is' prefera formed'with a' spring pocket l forreceifying the pressure spring, and hasfa e5, sc rewthieaded aperture m for the `corre- Where desirable, If

and 3. yoke near its center and limit its motionin spending adjusting screw. The spring pocket is formed in a central enlargement n on the outerside of the yoke, which is connected by a rib o and side anges p with the .bearing end j. The side flanges or legs of ,o

the yoke preferably converge toward the center as seen in Fig. 2.

According. to another feature of improvement I preferably mount the top shaft fixedly against downward yield, but so it can -be adjusted vertically and so it can move `upwardly in .case of abnormal stress. This is preferably accom' lished by mounting the yoke of the top sha. t bearing on fixed bearing portions g provided on the upper part of the casing at or close to its opposite sides, which receive faces 7* of the yoke and thereby support the latter from the 1casing at a j fixed vertical position relatively to the latter, Ybut without preventing any tendency of 85 the yoke to lift, as the yoke is not` fastened down o n the bearing portions but merely rests thereon.' These bearing portions are remote from the center, so that any tendency of the yoke to rock transversely of the'casing 90 is resisted by the fact that suchrocking would necessitate thatv the yoke should lift ofi' from one of the bearing faces in case it rocked on the other one. This provision is suicient to keep-the yoke in its normal position except under exceptional shock orV strain, when it maymove momentarily to ,avoid breakage.

To retain the top 'yoke against falling sidewise, I prefer to provide a guide car- 1'00 ried yieldingly by the casing, as the upwardly projecting guide s seen in Figs. 1 These guides loosely receive the torwa'rdpr rearward direction. For ad- 105 justine; it vert1cally,'Iv prefer to use an adjusting screw d screwing into its spring pocket l, which screw may be adjusted directly or throughsuitable intermediate provisions to lift the yoke from the top casing.

As shown, the casing is provided with a projection t, which is 'cylindrical and vhas a concave end, and a ball of'leador othermaterial u is set on this projection and carries a washer rv'against Which'the screw 11'5 l acts. Whenthe yoke is to be adjusted up- Y ward the Screw will be used, and if the yoke is'to be permanently raised and prevented- Vfrom rocking on the ball, li-ners willbe inend of the yokethroughlthe medium. of the 1.80v

` spring, in case this is desired. The .washer iv is identical with similar washers which are used between the adjustlng screw and spring f'or each of the lower yokes.

Another feature of improvement consists inl utilizing the weight ofthe lower yokes ais-an auxliarymeans of generating crush- *"'outwardly against the inner face of the ring,

and preferably also by supporting the outer ends of, the lower bearings by pivotal connections so disiiosed that the tendency ofA .these ends to' fall under their weight is `resisted by the pivotal supliiort in such way asto use the latter in the nature of a toggle joint, As" shown, this is done by supliiortin'g vthe outer endof each lower ykeby a link H, which is fulcrumed to` the lower casing land i to the yoke at J', so that it movably supports this .end of the yoke from the iasing, and

tends to move the end of the yoke outwardly asthe outward end vof the link is depressed. To carryfthe link H, the yoke is formed with 4e`a1sffw between which the linkis pivoted,

and the base is formed with ears aabetween Whlch the link 1s pivoted. l i

`The top yoke is also guided at its upper ipa/rt by a link H1- on each side, which eX-y tends from the shaft g1 to the luf.; ai, as seen in` Figs. 1 yand 2. These links H1 lmay b'e `used .Withfthe guides 8f: shown.

Inmachines of this c'.racter the crush- `ing` pressure has been carried on the bearirylgfs. Then the machine empty, the rolls ,rundirectly against lthe face 'of the ring,

`oneroll to the otl :but `when material fed, on to the inner face therolls are more or less separated from this face by the thickness of the layer of ymaterial beingl c ished. which rests on th e f:.1,ce. The gre er this thickness the greater the crusllingr pressure to be resisted by the` bearings. My inventioijr provides means for 'relieving the bearings of part of; this work, and means for transmitting the'resistance of the work beim;r done by r rolls as a crushing `force. by interposing between Lprefeii to do th] the rolls o' a part (an'rying'them, an internieciizite'roll l( against which the crlilshing Irolls may, run intermittently or continuously. While the intermediate roll K mayl ,.benitilized' as a driver for all the other `rolls, I preferato make it a lmere idler as `shown, carrying it on a light shaft supported by auxiliary ,bearings L from the cap Vof the top roll C, so thatit is normally in `Contact Awith the latter and slightly out of contact with -th'e two lower rolls, but in such position that it will be engaged by these casey either moves back a predctern'linel fdistance; In such case the1ntcrined1ate i791! will be raised between the .ihres #tells '.mcdiate roll is shown `lack of uniformity in their relative movey,

ment. It may bea singgle solidroll of suit abl'e peripheral contoual to `properly coact, .with the portion ofthe other rolls, or .their shafts, with which it contacts. I prefer to form` it as a split roll intwo halves each tapering toward the other, and pressed toward each other by splinfgs, so that it muy yield vmore or if r4desirable.` `Its shaft is preferably small encugh to fiex slightly in order to enable it to yield in working. This intermediate rollv greatly redl'lcesffrics. tion and outside strains.. `This will be useful particularly where qranulation and the avoidance of fines is des red. i

That part of my invention which provides for mechanically transmittingl the `inward thrust of each roll to one or all the otherv lrolls,]or for definitely locating the rolls and ring to clearance for thepassage of material being crushed, makes itl important to,r

provide for uniformity of feed, and auto`v proved means for automatically regulating the ieed. of such machin as, and I' pnovide an improved feeder' especia ly suitable'to operation tl'lerewith. i

Incrilshers of this type the ring is generally provided with a concave crushing face, and the rolls with ronvex faces. y Inlay autolnatically control the feed in such a machine by' my auxiliary roll K, which when subdivided and its-tworparts M are made of theijiroper taper to' De reciprocal to the crushing faces of the crushing rolls, 'will be acted on. byvthese rolls to separate itsk two parts against the resistance of their springs N on its shaft O as the crushii'ig rolls move too close together.l This spreading of the parts of the roll- K may be transmitted through levers I?` fulcr'lmed on the upper' casing at Q, to the journal R of Iacontrolling.;v gate T, which is moved to restrict the feed the parts of the roll I' spread, and 'aised to lincrease the feed as they again resume the` ilorn'lal, thus automatically regulating' y the flow to the machine.

My' invention provides an improved feed yconsisting of a revolving, table or disk Il in the feed hopper; and av'ormfand-g'ear drivins connective for this# rble nhiehis driven;

from one of the roll shafts, and bifurcated vspouts W for dividing the discharge between the two feed chutes of the crusher. The gate T is preferably a tubular,` part of the inlet of the hopper, and the disk U is mounted on -a vertical aXis concentric of the gate, so that `the material flowing through the gate will spread on the disk and flow-over the edges of the latter. The gate or the disk, or both, are adjustable to give the ldesired speed of fiow when the gate is in mid position. As the ate is lowered it will restrict the speed o? flow by diminishing the angle of the material on the disk, and when the gate is raised it will increase the speed of flow by increasing this anule. YThe material falling over the edge of the disk will roll. down the inclined bottom of the hopper until it falls into the feed chute, and will fall through these chutes and be deflected into the machine on the inner surface of the ring. The driving gear V for the feed is shown as a worm gear on the shaft of the disk meshing. with a worm carried by' a transverse shaft which is driven by a pulley the belt of which is driven by a pulley on the feed shaft D1 of the mill.

The feed chutes X are separate pieces bolted to the sides of the casing A, and are `provided ywith the movable tubular linings Y which protect them from wear, and with.

removable deflect-ing plates Z at their bottoms which project into the shell for guiding the material within the ring. i

The r'ig B is of improved construction, in that its annular concave crushing face or track y is flanked byA an outwardly7 tapering projecting portion s, beyond which it has a sharp inwardly tapering portion a. The' outward projection e reinforces the edges of the ring and preventsv the metal at this point from running over or breaking off, and the receding side wallsaf lighten the weight of the ring while increasing the clearance between its sides and the casing, so that material passing the projection a may easily escape into the casing.

The cheek pieces b on the inner Wall of the casing to protect it from cont-act with the ring B, are formed with a tapering face e opposite the face a of the ring, and with a reverse, tapered face fb opposite'the prol' jection-e ofthe ring. The face f is a relai tively greater distance from`fhe ring than is the face e', so that the latter will receive the rub ofthe ring, and any wear caused thereby will be on the outer portion af of the ring, and will not reduce the effective width of its crushing face. The reverse face ftends to deflect inwardly on tothe ring any large pieces which do notfpassout beltween the ring and roll'at top. The top cheek piece is formed with an integral lug h at one or more points on its outer face, these lugs` passing through apertures 4i" in `and deflectV it i'laterally of the. shaft.

the casing, and being held therein by wedges y" passing through holes in the lugs, as best seen inFig. 3. The lower cheek piecesl havesimilar lugs likewise passing through apertures in the easing Vand fastened by wedges or other suitable provisions, and on their inner faces these pieceshave the wide inclined contact faces e and the narrow reverse angle faces f overhanging the projections e of the ring, and inwardly thereof a beveled face 7n which serves to deflect back on to the ring any material tending to fall down between the inner wall of the casing and the ring'.

The shaft D is ofimproved construction inthat it'- has a roll seat n of large diameter, reduced bearing ends p at each side thereof, and an integral' projecting shoulder g between said seat and one of said ends, against which shoulder the roll C is driven, a collar 'r' fitting over the reduced end of the shaft,

and against the shoulder g', which collar is traversed by bolts s passing through the roll and engaging one face thereof, and through the collar and engaging the outer,face

thereof, so lthat the roll and collar are drawn against the projecting intermediate shoulder, and motion of either axially of the shaft is prevented. Outwardlyof the shell the ,shaft has a shoulder t where it enters the bearing E, and within'the bearing it has one ormore projecting shoulders u. The drive shaft D and the shaft D :project befyond the bearing, but` the ends of shaft D2, which are plane within their bearings, thrust against a loose thrust-disk 'v' set in a pocket fw -in the' end of the bearing, see Fig.

9. The bearing is formed with' a central cavity a" to makeV room for the babbitt to" flow around the shoulders u. i

I provide an ilnproved dust guard for closing the casing around each driving shaft. This consists of a sheet metal plate a2 for the top shaft, as for the front shaft, and a* 'for the rear shaft, and a disk b3 which is sup,- ported by lips c3 on the bearing cap, and

has a `central aperture fitting around the shaft. The disk b3 has a leaf spring da'engaging the bearing frameand -tending to force the disk toward the cap, and has projections e3 engaging the lips on the cap. A

springV ,f3 surrounding the shaft forces the disk away from'the bearing and toward the plate on the casing. This spring `reacts against a dust ring g? which fits on the shaft overhanging the shoulder t thereof, and fits within a,I pocket h3 in. the'bea-ring to keep dust from' blowing into the latter., The disk b?. has an annular chamber i srrounding the shaft to catchl outwardly blowing dust The plates a? 21,3 and a* are shaped to cover the shaft slots j jj inthe casing`,-and have ntegral hooks bent inwardly arund the walls of these slots to hold the 'plates in position.

' centri fu gal force.

,it will press the disk toward the rap.

The plate a2 has a` hook t at its upper end which prevents its lifting, near its middle side hooks 12" which hold it sidewise, and at its lower end a bottiiun hook m2 which crosses the bottom of. the slot j, and laps over top hooks mis of the plates y" and j". The lower plates have hooks k3 at their outer extremities, side hooks Z3 near their middles, and the top hooks ma.. All the plates have a ceny tral opening n, for passing the corresponding shaft. The disk o3 large enough to cover this opei'iing in' all i'iormal positions of the shaft it is carried by.

In operation, the ring and rolls will be driven to make thev side of the ring near the feed end of the casing move in adown- .ward direction, and` at sufficient speed to cause the material to' be crushed to be held on the inner face of the ring by VThe feed will enter through the chutes, fall on to the inner face.y ofthe ring, and `be crushed as it passes the rolls. The speedof feed will be adjusted to approximately maintaina` predetermined depth of material on Ithe inner" face of the rin'g,` and -then the automatic feed controller will be adjusted to operate with Variations of this feed; as explained. If the vmachine is to run without using the intermediate roll` K, the latter' will be adjusted out of action or ren'ioved, and the weight of the crushing parts alone, or the tension of the crushing` springs alone, or both combined, will be used to produce thefcrushlng power. y

l'lhe plates at. a3 a* are passed over they ends of their respective shafts, .and then the disks `L are` passedover the shafts against the outside of the plates, after which a spring f3 is passed over the adjacentend of each shaft against the disks. The hooks of the plates are then engaged with theA Walls of the cas ingy to hold the plates in position, and when tlie shafts are dropped 1n the bearu'lgs the springs f" are pressed into the space between y the bearings and the casing, so that they will press the disks against the plates. The disks are turned so that their `projecting fingers4 e will embrace the' bearing end y' of the adjay cent bearing yoke and guide the dlsks laterally of the yokemso that thev will be suppprted bythe projecting lugs of the cap la.

The free end of the spring d" is el'itered into the recess in the end of the bearing y so ythat The disk is thus supported by the rap through the fingers e, and by the` yokethrough the sriug rl, so that theydisk will follow the inpvemelit of the. yolmrai'lially of 'the ring,

and willbe pressed tightly' againstthe--sides of the casing so as `not to particirntte in movements of the shaft axially. The disk makes a fairly close fit around the shaft, aud interferes with thelilmving outiof dust or ellips through the adjacent slot in the casing. Mtv dust .outside of the disk that might `enautomatic :feed by moans of the thrust` roller 75 K wlgien this is a dii ided roller, I prefer to utilize the relative `movement of'the crushing rolls independently ofthe thrust roller for automatically regulating the feed. This may be variously cone, ybut I preferthe 3Gl simple expedient sh )W11 in Figs. land" 2, which consists in a :onnection between ythe various rolls for transmitting their motion` radially of the ring to the feed regulating mechanism. As sho'vn, eachbearingcap It' `i5 is provided with a plurality of lugs 01, those of 'the bearing E carrying the supportsL for the shaft O of the thrust roll near th`e` outer end of the bearing,` and those of all the bearings atv one side ofthe machinett).` carrying shafts or bolts` on which -are mounted pulleys ([2, arounl which a ro )e belt r" passes, which is preferably endless and passes around a pull ay a2 on theend of the lever l? in such manier that as the crushing 95 rolls move toward eachother with increase of material on the inner face of the ring, the belt will be slackeneil and permit the lever l to tilt outwardly* on its fulcrum Q, and

as the crushing rolls :separatethe belt will be' 105` tightened,` and draw the lower end of the lever' inwardlyl The pulley 82,' may be mounted with a slight lost motion, as shown,

and held in its mid position elastic'ailly, so thatthe lever li wil not participate in all 105 vilng'ationsof the rolls, but will `only be oper,- ated by relatively extensive movements thereof. The lever is kept under the tension of a spring t adjustably mounted and tendin'gfto draw its lower' end outwardly, so that "110 it responds instantlyto slackening of the belt "r2, and yields as the latter is tigl1tened, thus insuring that it corresponds accurately. y

in its mhvements'to a ny relative movements of the crushing roll s. the ver cal. short arri c of the ljeverP has a pin which engages y:he arm o3 of the lever R, which latter has short arms 7) engaging pins o carried'by the` gate T. Astheflower end of the lever P swings away from the 120 `center of the machire, itactsthrough the aaton'iatically diminished as thecrusl'nng 130 Above its fulcrum 1115` rolls 'are forced toward each other by the quantity'of material within the machine, and increased as these rolls recede from each other. By proper proportioning and correct adjustment, the machine can beset to Yautomatically regulate its feed very closely. L

While this regulation may be applied to any feed gate or to any revolving feed meming rolls is greatly increased. This I' acv complish in the construction shown by connectmg'a lever g3 to the lever P, and supv porting the disk ,U on this lever g3, so that `the disk Will be raised and lowered .with the outwardand inward swinging of the lower I end of the lever, the movements of the disk roll, and the other being over a of the machine, accordin being in oppositionlto those of the gate T, v

so that thediminishing and increasingef- -fects are correspondingly more pronounced.

As shown, ,the disk U is adj ustably screwed on the upper end of a shaft r3, the lowerend of which shaft passes through the worm gear s and rests on the end of the lever g3. The worm gear is feathered to this shaft so that the shaft can rise and .fall through ,the gear, but must rotate with it. The Worm 'u is ixed on its shaft es, which projects at its ends and carries differential pulleys fwa ,-the one being over a pulley y*Lx on one-end of the shaft lD1 of the feed ulley z3 on-the other end of such shaft. X beltax tracks on the pulleys at one side or the other to the speed desired 4for the worm sha t, and drives the latter from theshaft of the crushing roll C1.

In this manner the drive of the feeder acl cords with the motion` of vthe feed roll, so

that should the latter be stop ed, the motion of the feed will be sto'pe This is imortant, as the feed rol is the one most iable'lto slip or stoppage, and sometimes the drive roll continues to move lndependently `of orfaster` than the feedgroll'. In the ma' chine shown, traction is relied on for drivin l,the lower crushing rolls, and the-rin isl driven by traction from the top roll, so t at it will be apparent that there may bevariations in the ,relative movements of the sev,

In adjusting the4 feed, I prefer tochoose the normal position of the gate T and' disk U, and then set the automatic controlling device to shift them relatively to the positions chosen for them. To this end the gate T is,

set in any suitable manner, as by the hand screw b, before the short-,arm oa of its lever is locked to the shafton which it is ful-.

crumed; when the gate. is: properly set, and the short arm 03 is set to operate it, the hand screw will be screwed back out of operation,

,--the toggle links H, or both, or by their `or the disk U. The automatic feeding mechor its.lever c* will vbe loosened sothat the gate mayoperate independently of it.- The disk U is raised to the desired position and then the lever g3 is set on the shaft Q, i after which regulation will continue autofv matically until there isrreason `for again ado' justing the speed of feed. A sliding shutoft gate (Z is provided above the movable, j` gateT. l v l w The feeder itself is of improved construc-V tion,fconsisting of a shell e* having bifurl, cated inclined chutes f4, a subdividing'deilector g, a gear chamber It, a tubular bearin portion 1,*and an upper feed chambery* y which is closed by a cover k* having an an# nular gate Wall Zfopening into'the chamber' 80` 7'4, and an integral annular spout m4 within this chamber, and a flaring hopper a* above.. this spout with a track o* between the; 110p`.': per and spout for the sliding gate d*. 'The gate T is tubular and surrounds thev chnQe. m4, moving up and down in the well. The pins which connect the lever R with the gate, pass through slots iii the cover. The disk U' has :1 central cavity on its under side Vfittin overthe upper end of the 'bearing i4, an preventing dust falling into the gear chamber. The rear wall of the feed casing'lis. solid, and the front wall is open and is closed by av cover so that the gear chamber is closed against ingress of dust.

In operation, when the top roll is mounted fixedly against downward movement. but free to move upwardly, it will be adjusted" verticallyto the desired position, then suitl able liners will be placed on the rests for sup- 1,00 porting it. The other rolls will be pressed against Vthe ring by their weight' acting through'their swinging supporting links'or pressure springs, as desired. The direction of drive of the top shaft will be such that the top of the ring will move toward the feed roller 01.? Feed will be delivered by the feeders through both feed spouts, and will-be discharged on the inner faceof the ring in front ofthe feed roll. The material fed will travel around with thering and be crushed as it passes the rolls. The latter will move inwardlyandoutwardly according to the depth of material on the inner face of the ring,`and will follow the movements of lthe ring. f The speed of feed willbe suitably adjusted,v the gate d* being fully opened and the adjustment being`made .by the gate T j l aism will then befsetv to vary the-feed as' required. Incase of anA unusuallyheavy` feed,the rolls will move toward each other' until the thrust roll K is in contact with the other three rolls, whereupon the thrust rolL will revolve With them and` transmit much of the thrust from each to the others, co'r respondingly relieving the shaft bearingsof land guided' by "a ing' cap fand oftlie lower rolls,

through the links pressure. the top roll, the top yokefwill be moved upwardly by its adjusting screw.` The two parts'of the thrust roll will be adjusted inwardly to make up for Wear on the other rolls. The thrust roll will bear onthe edges of theother rolls, instead ci' oli-their centers', as theedges are less liable to wear than is the middle part of each roll.

It will be seen that my invention provides improvements which can, be variously and advantageously availed of, and it will beunderstood ythat the invention is not limited to the particular combination of features and details of construction or arrangement herein described as constituting its .preferred form, but that it' cany be employed in whole or in part according to such modilications as circumstances or theV judgment of those skilled in the art may'dictate, without departingfrom the spirit of the invention.

One modification is illustrated in Fig` 10, in which the thrust roll is an outside disk p* engaging projecting hubs or spindles q* on'the other rolls.

In Fig. 11 a modification is shown in .which three thrust rolls li are' used, one between each of the crushing rolls, and all rollsareconnected by' links.

Another nmdilication is shown in Fig. 152, `in which the top yoke is yieldingly mounted swivel link r4: engaging its bearing caps, and carries thetwo lower rolls 'by'svvivel links '8* depending romits bearonnected toY the `bearing caps so that lthe thrust'of each lower roll is transmitted to the top roll and bearing of throughthe intermediate thrust roll.

Fig. llshowsa modification in which the top roll is` guided by a link t* having ,a ful cram ,above the center of the ring, and the lower rolls are guided by links u* having I' o* and spring jbuttons 'w against fulcrums below such center.

Figi 14 shows a modification in which two ,springs Stand S* are foreach yoke,

Widely .separated and pressures bylbolts the ends of the levers resting on the casing A,` the free ejndof eachA lever embracing'the spring the 'springs being-v clampe'd at .predetermined end o-f/.tlieother 4leverfand the yoke being spring buttons', so that the irov-ided with a bearingor screw yf oppositethe free end of each lever,I so vthat"v'vhen "fthe yoke rocks in one direction this bearing the admit-ent free screw duof the yoke yacts aguii-nsti the center yoke", In this construction the''adjustingl tension 'of the As the ring lowers with Wear of caps, instead -die revolving in an lapproxi side of said roll liorpressing it Iu-pwardlyto` Vresistv a5 crushing pressure `from the innei face of said die.

springs is 66 set forth but not speciically claimed in this application, being the subject matter of claims in my appieations Serial Numbers 36,961, filed June 29, 1915, 36,965, lfiled June 29, 1915, 36,966, filed June 29, 1915, 145,690, tiled Jan. 3l, 1917, and 146,221, filed Feb. '2, 1917, which are divisional applicationsdf which this is the pi ,rent case.

IVhat I claim is A 1. In combination, an annular crushing die revolving in an approximately vertical plane and having :in intemalcrus ing face, a movable and rot itable crushing roll within, eccentric: to and disposed near the upper part of said die, having a crushing face reciprocal to that oi the latter, means for revolving one of said parts, a non-rotative pirotally mountec'. member on which said roll is mounted, and means below the axis ot' said roll for pressing said roll upwardly to resist a 4crushin g pressure from the inner face of said die'. i

.In combination, an annular crushing, die revolving in an approximately vertical plane having an internal crushing face, a movable and rotinable crushing rollV 'ivithi'n and eccentric to,fand disposed near the ups' per ,part of said die-,having a crushingface reciprocal to that of the latter, mean'sfor revolvingone of said parts, `a non-rotative movable member onwhich said roll is 'mounted, and means at the side of said `rolbfor supportingI and pressing said' memben'upwardly to resist a crushing pressure "from the inner face of said die. i 1j- .3 In combination,` an annular crushing' l'matel Yvertical plane and hav-ing an interna-l 'crus face," a movable and rotatable -crushingwithin, eccentric toard disposed near thaup partof, said die, hav-inf a crushing face ciprocal to that' cf, the datt-er, 'means volv'ingf one of said parts; a movabl ber on' which sai roll is mounted, an able means crossing said die and rotating carrying said roll therein, and means alg-,eac

its

4. -In .combi'na;ion, an` annular crushin f die revolving' in an approximately verticali 135, plane and having; an internal crushing n a movable' andrete-table crushing rol with?? in, eccentric to a iddisposed near'the upper'` 3Q v 4 fmovable rotatablecrushing rolls within and part of said-die, havin a crushing face re 'ci lrocal to thatof the atter, me'ans for re vdivingoneA of said' parte,4 amovable, membeifon which said. roll is rotativelyomountel', and means inwardly of- Sai'tl die forv prese die havinggan internal crushing face. a mov.

"ing said roll upwardly to resista crushing pressure from the inner face of said diei.' f5.' In combination, an annuler crushing die revolving in a vertical plane and havin an internal crushing face', a .movable an rotatable crushing rollwithin, eccentric t0 and disposed near the upper part of, said die, having a crushing faoercci rocaltoy that of the latter, means for revo ving one of saidv parts, a non-rotative movable inember carrying said rol1,a`nd means below said roll forpre'ssing said roll upwardly toward said die .to resist a crushing pressure from' the inner face of the latter.

6. In combination, an annular crushing Y able and rotatable crushing roll within and eccentric to said die and having'a crushing face reci roculft'iq that` of the latter, means for revo ving one of said parts, a non-rotaV tive movable member on-Which said roll iS- otatively mounted, and pressing means dis-` posed inwardly of theaxis of said roll und serving to press-said roll upwardly-toward tli'e'inner face of 4said die to resist'. :iler-ushing pressure from`.the inner face of the latter.' .7. Inv combination, an annular crushing die revolving in a Vertical plane and having an internal crushing face, a plurality vof eccentric to said die, 4said rolls movable towardandfrom one anotherand each havin 'a crushing face reciproca-Ito that of sai die, means for revolving one of said arts, non-rotative 4swinging carriers for sai rolls respectively, and means intermediate'of said carriers, .pressing said rolls apart to generate said die.l 1

31u-'combination an annular crushing i HIVdie revolving in' a vertical plane and. havin auf-internal crushing face, a A rotatable ro within, eccentric to, and near` the upper 'part of, "slid die, two 'rotatable and movable,`

crushing nella below said'rollfa'nd within and eccentric" to saiddie and each having ,a cr'sliin i face reciprocal to that of the latter,

'plane end havi'ng-an internal crushing face,

a movable and rotatable crushing roll withvarcrueliing pressure toward the inner 'facefofi' said roll vagainst said die.

f a movable and rotetablpfcrushing ro means or revolving one of said parts,'non.

'said rollstowar'd said die to resist crease in', eccentric to and disposed near the upper part of'said die,4 havin a' crushing face re'- ciprocaLto thatA ofthe atter, means .for revolyng one o f said4 arts, a non-rotative member on which sald roll is 'rotatively monntejd, land swinging means beneath said mlifber for vpressing saidroll upwardly to resist a crushing pressure from the inner 4facefof said die.-

10'." llicombination, an annular crushing 'die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushingroll within and eccentric tosail ldie and having a peripheral crushing face reciprocal' to the crushing face of the latter, means for revolvin one of said'parts, a non-rotative movab e member on which said roll 'is rotar tively mounted, and' means adjustable" in al direction substantially longitudinally bf the axis of said die for holding said roll outl1. In combination, anl die having an-lntcrnal crushing face, a Inov- .wardly toward the inner face of the latter to reslst a crushing pressure from the inner -face of said die. I -v annular crushing'.

able axid rotatable crushing roll within .and eccentric to said die and having a'peripheral -crushing face reciprocal to the crushing .face

O'f the latter, means for-revolving one of-said parts, a non-rotative movable member Aon which said roll is rotatively mounted, andv means-holding said roll outwardly toward the inner face of' said dietoresista crushing pressurev therefromand reacting in a direction substantially parallelwitlrt e "of said die.

` v412. `Thecombination with a revolving annulardie and a crushing .roll therein, of a casing for 'said parts, a bearing ,frame ex- .tending across said die and having bearings for said rolll at opposite sides,` pressing means disposed inwardly ofthe `anis of said roll for pressing -said roll obliqely down Av wardly`andoutwardly, and a toggle support for said frame normally axis ' 13. In combinatiom-'an annularcrushing; 'Y

dierevqlvi'ng in an'approxixnately vertice.

plane and having an inlealcrushing l' within, eccentri to and dis near the upper reciprocall to 'that ofv the latter, means 'for 'revolvingonev of said '.'parts, a'moyable member' on which said roll .is rotativel -x'nounted, 'and means below said member an acting divergentl'y upwardly 'for pressing said rollupwardly to resista cru pressure from the inner face of said die'lfll 14. In combination an annular-crushing die having an vinterna crushing face, a-m'ov'` able and rotatable/crushing roll within and eccentric to saidV die and having a` peripheral of said rollsand serving to' cominunlcate the inward rpressure or stress jof one to the other ```or others. Y

f and three separated crushing rolls within and pressing outwardly toward the inner "crushing face reciprocal to the inner face thereof, means for revolvln one of said,l parts, a non-rotatlve movab e member on which said roll is 'rotatively mounted, and means pressing said rolloutwardly toward the inner face of said die to resist a crushing pressure therefrom comprising a 'spring o1'- springs reacting in a direction substantially" arallel with theaxisof said die.

15. he combination with a revolvin annular die of a roll therein-carrying sai Vdie and mounted o'n fanaxis fixed against downs 'ward movement and free to move upwardly,

lowercrushing rollsfwithin said die, `a casing inclosing `a'ndj in'ovabl supporting said parts, 'bearings for4 said ower rolls at the opposite sides of s aidcasing. free to move 'inwardly and outwardly relatively thereto.

16. In combination, an annular crushing die revolving in' an approximately vertical plane and having` aninternal crushing face, a movable and'rotatable crushing roll within and eccefitricto said die and Vhaving a peripheral crushingface .reciprocal to the inner face thereof', means'for revolving one of Vsaid arts, a .non-rotative pivoted mem` ber on wlliichsai'd-roll is rotatively mounted,

"elasticmeans' reacting in a direction sub-4 stantiallyjlongitudina of the axisof said die, -and "'means whereby the stress' ofsaid elastic. 'means is transmitted toV press said roll'outwa'rdly towardtlie innerfface of said Vdiete resist a crushing pressure fronithe inner 'face of the latter.

17.' Incombination 'an annular, crushing 4die having an interna crushing face, a plui rality of rotatable 'Y crushing rolls within? and eccentric toV said die Vand eachfhaving a peripheral 4jcrushipg face reciprocal "to, the crushing face of said die, one of said' rolls movable toward and from another of said rolls, means for' 'revolvingone of saidparts,

carrying means on which said, lls are rotatively mounted respectively,movable .the onel toward Vand from the other or others,` and for pressin said rolls away fromvone an-l '.otherf to resist 'a' crushing pressure from the inner face of middle-said movable means reacting outwardly relatively to twoormore ,18; The combination with an annular die and three or more sep arated' crushing rolls within and pressing outwardly .toward the inner face thereof, Aof means for driving one' of said parts relatively to theothers, and a thrustmernber between saidcrushing rolls transmitting` the radial thrust of each to the The combination-with an annular die face thereof, non-rotati cg bearings carrying said rolls, means for drivin one of sai parts relatively to the others, and a thrust roll between said rolls.

20. Ihe combination with an annular die, a roll therein, and tw) separatedmovablerolls therein, and mears for driving one of said parts relatively to the others, of a mov- `ably mounted roll disposed substantially centrally 'of said die between. said movable rolls and' radially trarsmitting the thrusts thereof to each other, A

21.V The combination with a revolving annular die and a plurality of crushing rolls therein, and means for driving one of said parts relatively to the others, of a ,feeder for feeding material to be crushed on to the inner face of said die, lmd means automatically regulating the speed of feed in accordance with the position of said rolls within said die.

22. The combination with an annular die and a plurality of sepiratedcrushin rolls therein, disposed around the center t el'eof ,ofwa' yielding'ly mount ad roll between said rolls .for transmitting t' 41e radial `thrust from one-tothe' other.`

` 23. Incornbination, a revolving annular crushing die having an,4 internal crushing face, -a plurality of, iotatableqcoperating 'crushing-rolls movabley relatively andjasa group within and eccentric;f'saidjdie d each having "a periphel all. crushing 'face die, means for revolving one o f said'parts, movableij -non 'rotative ivotallyv mounted means carrying said iol s, and; nieansffdis posed intermediate of .said rolls reacting outwardly toward and pressing tw o ormore thereof away from one another witha'force that is countervailing in both directions,

another.

m5 transmitting. the inwai pressure' ofl one to 24. The combination with-a a yieldingly mounted roll therein,'the" ne mov-able:- substantially :radially o'f theoth'er,

and feed Vmechanism fc r feeding material-n n;

to the inner face of-said die consisting of a tubular spout, a disk A'opposite lsaid spout,

and a, chute leading from ,sa'd'disk'to the inner side of said die, of ineans'for adjust tion of themovable on e' of said parts.

' 25.- The combination with a'revolvingdie,

al yieldinglyI mounted roll therein, the one movable substantially radially of the other,

on to the inner face of said die consisting of a tubular spout, a disljopposite said spout, and a chute for ydirei-ting feed fromV said disk into said die, of m'eanafor adjusting said disk in accordance with the position of .the movable one of saidlparts.

,12o and feed mechanism for' feeding material 16.4 The combination lwith arevolving'an- 25 nular die and a 30 moved by such means.

45 its sides, and a bearing V1 50 said shell for supporting said Softaiid 'a roll therein, of

..ila-r die, a movable roll yieldingly-mount- 10 'driven therefrom by traction, means for driving said die, and means for feeding inaterial onto the innerface of the die in front of the roll therein driven by traction, ofa driving connection between said roll and v said feeding means for driving the latter' from suoli roll.

28. The combination with a revolving die and a plurality of relatively movable revoluble rolls therein, of a feeder for feeding inaterial to said. die, and'nieans automatically regulating the ope ation of said feeder and operated by relative movement of said rolls toward 'and from each other.v

29.` The combination with a revolving anplurality of relatively moi'- able revoluble crushing rolls and a feeder for such. rolls, of means'adj usted by the relative movement of such rolls toward and' from each' other. and a disk in said feeder 30. The combination with arevolving-anmillar die and a. roll within and supporting said die, of a shell lnclosing said part-s and 'having a plurality of fixed hearing faces on its upper portion, a bearing frame crossing the top ot' said shell having bearings for said roll at opposite sides of-said shell, and having an intermediate portion crossing sa-iol4 shell and resting on said fixed bearing por- 40 tions.

v'31. The combination with a revolving annular die and a roll within it, of 'a shell inclosing said parts and having outwardly projecting portions on its outer edge between frame crossing the outer edge of said shell and having hearings for said roll atopposite sides of said shell, and having an intermediate portion supporti-id'froni said shell and means vcarried by frame so that it can oscillate relatively thereto.

32. The coiiibination with a. revolving annular die and a roll 'within it, of .asliell hav- 'ing anoutwuirdly projet-,ting leaf-spriing.y a

bearing frame having bearings for said roll at opposite sides of said shell, and having-'ali interinediate portion crossing said shell and guided relatively thereto bysaid spring.

33. The combination with n revolving die aV shell inclosing said v 4'parts and having :inexternal substantially radial projection, and a bearing frame having bearings for said roll at opposite sides of said l shell, and having an intermediate said roll for regulating the shoulder portion crossing said shell and having a chamber opposite and inclosing said proyection and means for supporting said frame from said shell so that said frame can 0scillate. 5

34.. The combination with a revolving die and a roll therein, of a shell inclosing said partsya frame crossing said shell and having bearings for said roll at opposite sides thereof, pressing means disposed inwardly of the airis of said roll for pressing said roll obliquely downwardly and outwardly, a link pi'voted to said shell and engaging said frame at one side thereof, and a second. link pivoted to said shell and engaging said frame at the other side thereof.

The combination with a. crushing roll, of a revolving annular die having an im tei-nal track opposite and surrounding said roll7 outwardly projecting portions at opposite sides of said track, and inwardly inclined sides, and pressing means disposed iii-` wnrdly of the axis of said roll for pressing said roll 'obliquely downwardly and outwardly.

36. The emnhination with an internal revolving' crushing roll, an annular revolving die surrounding said roll having.,r an internal track ,hearing-against and coacting there# wit-h, and having outwardly flaring side faces. and a shellinelo'sinfr said )arts of av cheek-piece within said shellat each side. of said die having an outwardly inclined face opposed to said die.

37. The combination with a revolving annular die having an internal. track and inwardly inclined sides, a crushing roll within and supporting said' die and acting yieldingly against said trank, and a shell iiiclosing said parts, of acheek-piece within said shell at each side lof said die and having an inwardly inclined fare opposite said die.

3S. The combination with a shaft having a roll seat and an outwardly projecting shoulder at one side of said seat, of a crushing roll lia-ving a centrall bore fitting said. seat at one side of said shoulder and having transverse holes outwardly of said bore, a collar fitting on said shaft at the other side ofsaid shoulder, and `bolts.traversing said holes and said roll and clamping it and said collar against said shoulder.

3f). AThe con'ibi-nation with acrusliiiig roll of a shaft therefor having` `a shoulder t and" a reduced bearing portion beyond said shoulder7 a bearing embracing said bearing portion, and a ring rotativelymounted on and.

su rronnding said shaft overhaiiging said shoulder i said casing,

`a dust guard surrounding said shaft and carried by said bearing, and a spring surrounding said shaft'between said bearing and dust guard pressing said 4dust guard toward said casing. y' f 41. The combination with a crushing roll,- a Shaft therefor, a casing inclosing said roll and having a slot for said shaft, a bearing for said shaft `outside of said casing, of a dust guard surrounding said shaft and havin'g fin ers resting on said bearing, and a spring etween said bearing and guard, reacting a ainst them transversely of said shaft an pressing said fingers toward said bearing. i

42a; The combination with a crushing roll, a shaft therefor, a easing inelosing said roll and having a slot for said shaft, and a bearing for said shaft 'outside of said casing, of a plate having acleaianee hole surrounding said shaft and covering said slot and a dust guard against said plate.

43. yThe combination with a crushing roll, a shaft therefor, a casing inclosing said roll and having a slot for said shaft, and a'bearing for said shaft outside of said casing, of

a -plate having a clearance hole surroundingsaid shaft, said plate having means for positioning it laterally of said 'slot and covering saidslot and a dust guard outside of and against said plate.

44. The comblnation with a crushing roll,

af shaft therefor, a casing inclosing said V roll and having a slot for vsaid shaft, and

a bearinl -for said shaft outside of said casing, o aplate having a clearance hole surrounding said shaft and having means for positioning it longitudinally of said slot covering said slotand a dust gua-rd sliding against' the outside of said plate.

4&5. In combination, an annular crushing die .having an internal crushing face, three or more movable and rotatable crushing rolls within and eccentric lto said die each having a. crushing facer-reciprocal to that-of the latter, means for revolving one ofsaid resist a crushing .pressure from Vthe innerpart's .nieans for supporting said die, movi' able members .carrying said rolls respectively, and means intermediate of said'mem bers yieldingly-pressing one of said 'rolls outwardly away 'from another' ofsaidrolls and reactingr against a plurality of said rolls to face of said die and transmit such pressure from one to another Vof said rolls with a. force that 1s countervailing in two direcy tions 246.' In combination, an' annular crushing die having an internal crushing face, three or more movable and rotatable crushing rolls within andeecentrif1 to said die each having a crushing face reciprocal to that of thex "---'latter, means for revo ving one of said parts, means `for supporting said die, movable members carrying saiy d rolls respectively, and means intermediate of said members pressing two or more of said rolls outwardly and away from one another to resist a crushing pressure from tha inner face `oisaid die said means reacting toward two or more of said rolls with a lorce that is countervailing in two or more directions. a l

47. In combination, an annular crushing die having an interna. crushing face, three or more movable and rotatable crushing rolls within andeccentric 1.o said die each, hav ing a. crushing face reciprocal to that of the latter, means for revolving one of said parts,

means for supporting said die, movable members carrying said rolls respectively, and movable means intermediate of said meim` bers for pressing said rolls outwardly away from one. another to lesist a crushing pressure from the inner Face of said die, said means reacting divergcntly toward said rolls with a force that is co .lntervailing in two or more directions.

48. In combination an annular crushing die having aninternal .meshing face, three or more movable and rotan-ble crushing rolls within and eccentric to said die eac-h having a crushing face reciprocal to that of the latter, `means for revolving' one of said parts, means for supportilg said die, movable members carrying said rolls respectively,

and means pressing Said rolls outwardlyy away from one anot .1er to resist al crnsh..

a crushing face reciprocal to that ofthe latter, means forrevoh ing one of said parts, means for supporting rsaid die, moyable members carrying said ,rolls respectively, and yielding means intermediate of and reacting -outwardly to'vard two or more off1 said members and pressing two or more of said rolls outwardly and away from one an,-

other withl a force tlat is countervailin'g in two or more dlrections.

50.V Inlcombination, an 4annular crushing .die having zin-internal crushing face,` two or more movable and rotatable crushing` rolls within and eccentric to said die each hav ing a crushing face-1eciprocaltothat of the latter, means for revolving one of said parts,`

means for supporting; said die,'tw9,.or' more movable members each carrying/one of said rolls, means lntermedlate of two'or more of' Said members and movable axially of-said 3 5 two or more rotatable crushing rolls movdie holding two or`more of said rollsoutwardly away from one another to resist a crushing pressure from the inner face of said die.

51, In combination, an annular' crushing die having'an internal crushing face, two

orV more movable and rotatable crushing rolls within and eccentric to said dieeach having a crushing face reclprocal to that of the latter, means' for revolving one 'of said parts, means supporting said die, two or.

' said die.

In comb-imition, an annular crushing diehaving an ,internal crushing face, two or more movable and rotatable -erushing rolls Within and eccentric to said die each having a crushing face reciprocal to that of the lat ter, means for revolving one of said parts, means for sul'iporting said die, two or more movable members each carrying one of said rolls, and means :aljustable axially ot said die for holding said rolls outwardly away from one another to resist a crushing pressure from the inner face of said die.

53L In combination,4 an annular crushing die having an internal crushing face, two or morejmovable and rotatable crushing rolls withinand eccentric to said die each having a crushing face reciprocal to that of the latter, means for revolving one ofsald parts, means for supporting said die, tw'o or more movable "members each carrying one'of said rolls, means for holding two or more of said rolls outwardly away from one another to resist a crushing pressure from the inner face of said die, :01d a spring orsprings reacting axially of said die and actuating said means.

54. In combination, an annular crushing die revolving in anapproXimate-ly vertical plane and having an' internal crushing face,

two or more rotatable crushing rollswithin and eccentric to said die, movable toward and from each other and each having a peripheral crushing face reciprocal' to the inner face of'said die, means for revolving 011e of said parts, -melnbers'movable toward andfrom each other in -Wlnch said rolls areA rotatively mounted respectively,- movable means intermediate'of, said lnembers serving 'to hold two of said rolls outwardly away from one another toward the inner face of said die receiving the inward pressure or stress of one ofv saidl rolls and transmitting it to another of said rolls to distribute the pressure between said'rolls'.

In combination, an annular crushing die revolving in a substantially l verticalplane and having an internal crushing face,

able toward 'ad'from each other Within and eccentric to`sa1d d1e and each havlng a -crushing face reciprocal to that of the latter, means for revolving one of said parts, members movable toward and from each other on wlnch sald rolls are rotatively mounted respectively, and means movable' transversely of the axis of said die intermediate of said members for holding two or more of said rolls outwardly away from one another for receiving the inward pressure or `stress of one of said rolls and imparting it to another of said rolls to distribute the crushing pressure between two or more of saidfrolls.

56. In combination, an annular crushing -die having' an internal crushing face, three or more rotatable crushing rolls within and eccentric to said die, one or more of said rolls movable toward and from the other or others, and each of said rolls having a peripheral crushing face reciprocal to the crushing face of said die, means for revolvincr one of said parts, carryingv means on which said rolls are rotativelyV mounted respectively, and movable compression means intermediate of said carrying means for receiving the inward thrust or pressure of one of said rolls and transmitting it to two other of said rolls. l

57. In combination, an annular crushing die revolving in an approximately vertical plane and having an internal crushing. face, two or more rotatable crushing rolls movable toward and from each other within and eccentric to said die. each having a crushing face reciprocal to that of the latter, means forrevolving one ot said parts, nonrotative means movable toward and from each other on which said rolls are rotatively Imounted respectively, and equalizing means lwtwe'enaid non-rotative means resisting the inward stress or pressure of each of said rolls and transmitting it to the other ,of said rolls -to resist a crushing pressure from the inner face of said die.

5S. In combination, an annular crushing die having an internal crushing face, two or4 more' rotatable crusl'ung rolls wltlnn and eccentric to said die. and each havingv a crushlng face reciprocal to that of the latter,

means for revolving one of said parts` nonrotative members on which sald rolls are rotatively mounted respectively, compression means intermediate of theraxes of said rolls for holding :aid rolls away from one another to resist a crushing pressure from the inner face of -said die.

59:- In combination, ani annular crushing die 'having an internal crushing face, two or more rotatable crushing.;- rolls within and IOL eccentric to said die eaclr having a crushing face? reciprocal to thatl pi the latter, means for revolving one of saint parts, fxneans supporting said die, two or 'more movable mem-l i berseach carrying one of said rolls, and n'ieans movable axially of said: die holding said rolls outwardly away :from one anotherV to resist a crushing Apressure from 1the inner 5 face of said die.

face recipriiical tolthat of the latter, means 5 and means movable axia adp for revolving'. one of said parts, means sup porting said die, a plurality or ad]'\1stable -melnbers each carrying one' of said rolls,

n .vans holding' said rolls outwardly away from one another to resist: a crushing pres"y sure from the lnner face of said (11e,y and,`

`means n iovable vzwiially of said dieorfrelatively adgustmgsalid adlustahl,e.11'nelnbers:oy 61. In combina-non, anannular. crushing ,20" die havingan injternalcrushingl face, two orU more adjustable andi` rotatable crushing rolls within and eccentrietn said' die eachv having al crushing'ffare `reciprocal to that of the latter, means revolvmr one of saidparts,

ting said rollsl V ,62. In coinbination,,r an annular crushing;- die having an internal crushing tace, two or more rotatable crusljiing, rolls within and4 eccentric to said dielv each havingarerushing 1 .face recilirocal to that of the latter and'two of said rolls movi yleas a group within saidv die, means yfor rev'olvingyone ot said parts, means supporting said' parts, a movable member holding said rolls away from one y, able axially of another to `resist a crushing pressure from A the inner'fac 1 of said die,`and means adjust .i die torv ad] listing said movable inembe 63. yIn gminbination, an ,annular crushing die having an intel. ,crushing'face, two or more rotatable cri shing rolls within eccentric to' saidv die each lnivliing,r crushing face,reciprocaln to that of the latter, two of 5 said rolls movable asa group within s aid die, movable non-rotative meansy carrying said rolls, and rotatable means holding `said i yrolls away from. one another to resist a crushing pressure from they inner face of Said die.

64.111 combinatioln' an annular crushing' die having an internal crushing face, two or more rotatable crushing, rolls within and eccentric tosaid" die each `having a -crush- 'ingfface-reciprocal to that of `the latter', one of said 'rollsmovable toward and froml an other-jef"saidr rolls, means for revolvingr one ofaid artsi means supporting said parts, a lInova)lefincmrotative member carrying said movable roll, ,Hand pressing meansdis- `posed 'inwardly of/ the axis of said, movable roll and acting to press the. latter obiiquely downwardly and outwardly away from the:

other of'said rolls for holi'ling said rolls outwardly and away from one another to resistv y of rsaid die `for .a crushing pressure from the inner face of said die. l I, V

In. combination, an annular crushing die having an internal crushing `face,'two yor more rotatable crus 'nin rolls( within and eccentric to said. die eac having a crushin facereciprocal to th stof the latter, two o said rolls movable; s1 lbstan'tially radially of said die, means for revolvingr one of said parts, movable meml erscarrymg saidmow able rolls respectively, and pivotally mounted means intermediate said' members for holding said rolls olu'wardly away lfrom one another to resist a crushing pressure from the inner Aface of said die.

66. In combination, an annular crushing die having an intern: .1l crushing face, two or' more rotatable crushing rolls Within andec- 'centric to said dieeich having a crushing face reciprocal to that of the latter, two of said rolls lmovable toward and from each other, meansfo'r revolving one of said parts, means for supporting said parts movable members carrying said movable rolls respecrolls, and means movable axially of said die holding said rolls apart to resist a crushing pressure from the inni ir face of said die.

68. In combination, an annular crushing die having aninternal crushing face, two or more lrotatable crusl ing rolls within and eccentric to said die each having a crushing face reciprocal to that of the latter and two, of said rolls movable toward and from one another, means for" revolving one of said parts, means supporti ng'said parts, movable members carrying the movable rolls respectively, expansively actin means ,movable axially of said die presslng said movable rolls outwardly away `from one another t0- resist a crushing pressure from the inner! Y face of said die. i

69. In combination, `an annular crushing die having an-internal crushing face,two or more rotatable crushing rolls within and eccentric to said die an d each having a cruslr,

ing face reciprocal to that of the latter, meansior revolving one of said parts, non- 'rotative members mov able toward and from each other on which sz-idrolls are rotativel-y mounted respectively, anddivergently actingy means dlstributing; the inward stress or pressure of one of said rolls Ito another of rthe latter, means for revolving one ot' said parts, non-rotative means movable toward and from each other on which said rolls arel rotatively mounted respectively,and radially outwardly pressing means interi'nediato of the axes of said rolls for holding said rolls outwardly away from another to resist a crushing pressure from the inner face of said die.

71. In combination, an annular crushing die having an internal crushing face, two or more rotatable crushing rolls within and eccentric to said die each having a crushing face reciprocal to that 0f the latter, two ot said rolls movable toward and from one another7 means for revolving one of said parts, means supporting said parts, movable means' carrying'said movable rolls respectively, separate means for holding said movable rolls outward and away from one another to resist a crushing pressure from the inner face of said die, and'movable means connecting said separate means to equalize their action.

72. In combination, an'annular crushing die having an internal crushing face, two rotatable crushing rolls within and eccentric to said die each having a crushing face reciprocal to that otithe latter and one ofsaid rolls movable toward and from another of said rolls, means for revolving one of said parts, means supporting said parts, a movable member carrying said movable roll, expansiyely acting adjustable means at each side of said movable roll for holding it outwardly and away from another of said rolls, and an adjusting connection between said expensive means.

73. In combination, an annular crushing each side of, said movable roll for holding it outwardly andaway from another of said rolls, and a movable connection between said yielding means. A

74. In combination, an annular crushing die having an internal crushing face, two or more rotatable crushing rolls within and eccentric to said die each having a crushing face reciprocal to tl.1 at of the lat-ter and one of said rolls movable toward and from another ot said rolls, means for revolving one of said parts, means supporting said parts, a movable member carrying said movable roll, and means floating axially ofvsaid die holding said rolls outwardly away from one another to resist a. crushing pressure from the outwardly away from one another floating i axially vand circumterentially7 of said movable rolls.

'76. In. combination, an annular crushing.

die having an internal crushing face, two or more rotatable crushing rolls within and eccentric to said die each having a crushing face reciproca-l to that of the ,latter and one of said rolls movable toward and from another of said rolls, means for revolving one of said parts, means supporting said iarts, a movable member on which said mova le roll is mounted, and oscillatory means pressing said rolls outwardly away from one another to resist a crushing pressure from the inner face of said die and reacting outwardly toward two or more of said rolls with a force that is coimtervailing in both directions.

7T. I n clnnbii'iation, an annular crushin die having an internal crushing face, two

l, more rotatable crushing rolls within and eficcentric to said die each having a crushing face reciprocal to that of the latter, one ot said rolls movable toward and-from another ot said rolls, means revolving one of said parts, a movable member on which said movable roll is mounted, and rotatable means pressing aid movable roll outwardly away from another of said rolls to resist a crushing pressure from the inner face ot' said die.

d'8. ln combination, an annular crushing die having an internal crushing'face, two or more rotatable crushing rolls within and eccentric t-o said' die each having acrushing face recipro :al to that of the latterand one of said rolls movable toward and from another of said rolls, means for revolving oneV of said parts a non-rotative movable member on which said movable roll is rotatively mounted, thrust -members movable substantially longitudinallvY of the axis of said die, and serving to resist the inward stress or pressure of said rolls and yielding means rel sisting said thrust members 79. ln combination. an annular crushing die ha ving an internal crushing face, two or more rotatable crushing rolls within and ecsist a crushing "of said die.

centric to said die each having a crushing face reciprocal to that of the latter and one of said rolls,1noviftble `toward and from an-v other o' saldrolls, means for revolmngione h 80. In comljiil'iation, an annularcrushing die havingan. internal crushing face, two or more rotatable crlilshing rolls within and eccentric to said die each having a crushing face reciprocal to that of the latter' and one of said rolls movable toward and from ani otherof said rolls, means for revolving one of said parts, means supporting said parts, a men'lber on which one or' said parts is mounted, a pivotally mounted movable inember on which said movable roll is mounted,

` ,and means intermediate of said. rmembers pressing two or more of said rollsoutwardly away from one another.

8l. In combination, an annular crushing die having an internal crushing face, two or more rotatable crushing rolls within. and eccentric to said die and each liaving a pe-` ripheral crushinrr face reciprocal` to the in- -ner face of the latter, two or more'of said rolls movable toward and from one another, means for revolving one of parts, nonrotative movable 'members on which said movable rolls are` rotatively mounted spectivel-y, thrust members resisting the inward stress or pressure of said movable rolls, ani movable n1 ansengagin said thrust members andv ldistributing t ethrust or i 1 stress of one. to another.

iti`

other of said rolls,V means for revolving one B2. In combination an annular crushing.

die having aninternal crushing face, two or more rotatable crushlng rolls within and eccentric to saiddle each liavinga crushing face reciprocal tofthatfof the latter and one f said rolls movable toward and from an-v of said parts, means sup orting said parts, a member on which one o sald rolls 1s mount- `ed`,"`a pivotally mounted member on which said movable roll is mounted, and spring actuated meansy intermediate of said members pressing said rolls outwardly away from one "another to resist a crushing pressure from the inner face of said die. I t i 83. 1n combimition,A an annular 'crushing die having an internal crushing'faee, 'two,on

more rotatable crushing rolls within` and eecentric to said die, each-having @crushing face reciprocal. to that of the letter and `one of said rolls movable towardand.Y treureni other of said` rolls, means for revolvingnone of said parts, means supporting said;par ts a member on which one'ofsaid rolls 1s mounts.,

ed, a llivotally mounted member Orl-'Which said movable roll is mounted, and

pressing said rolls outwardly away from` one another to resist a erushlng pressurey from the inner face (if said die comprising a spring or springs int armedlate of said members. A

484. In combinatioman annular crushing.'V

die having an internal crushing face, two` or t more rotatable crus 1mg rolls within and,"` eccentric to said die Ibach having a crushing A Aface reciprocal. to that ofthe latter and ozne'wf` of'said rolls movable toward and from another of said rolls, n eans for revolving one of said parts, means supporting said parts, a member on whicl oneiof said rolls` is` mounted, a pivotally mounted member on 3o which said movable roll ismounted, `and movable means intermediate of said members swinging said pfvotally mounted member outwardly and holding said movable roll outwardly away from another of said rolls to resist crushing pressure from the inner face of said die. i

85. nIn combination, an annular crush-ing die having an internal crushing face, two or more movable and rotata"1 le crushing rolls 90 within and eccentric 1o san die each having a crushing face reciprocal tr that of the latter, means for revolving one` of said parts, means supporting said parts, two or moreV pivotally mounted members on each of` which. one lof said rolls is .mountedrespecs tively, and spring mounted means-intera crushing face reciprocal to that of the lat-u ter, said rolls movable toward and from one another, means for levolving one of said parts, two or 4more pifotally mounted members on which said. rolls are mounted reof said members holding said rolls out-l wardly away from one another and acting toward twov or more ot said rolls and transmitting the thrust fron one to another with spectively, and movable means intermediate 110| a force that is counteivailingin both direc- '115 tions,"

87. In combination, an annular crushingI A die having an internal `crushing face, two or more rotatablecrushi ng rolls movable toward ind from oneanother within and ec- ,120'

centric to said die each having a crushing xface reciprocal' to thai; of the latter, ,means :for revolving one of stidparts, two or more pvotally mounted members on which said 'd movable rollsare mou ited respectively, andlli one another to 'resist a Crushing pressure` fr the innerfface of said die. "i i 

